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OEM Carrier Contactor 1-Pole 24V 30A for PY3GNAA24040NA
Carrier

OEM Carrier Contactor 1-Pole 24V 30A for PY3GNAA24040NA

SKU: CARRIE-PY3GNAA24040NA-CONTACTOR-HN51KC024 Brand: Carrier
✓ Guaranteed to fit PY3GNAA24040NA — or your money back. Terms

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier Single-Pole Contactor 1-Pole 24V 30A for Model PY3GNAA24040NA

This is the factory-authorized OEM contactor (part# HN51KC024) specified for the Carrier PY3GNAA24040NA packaged unit. The contactor is the high-voltage relay that closes when the thermostat sends a 24V call for cooling, energizing the compressor and/or condenser fan motor. A failed contactor typically presents as an AC unit that simply will not turn on, hums without starting, or trips the breaker repeatedly — even when the thermostat is calling for cooling.

  • Specs: 1-Pole (single-pole) | 24 VAC coil voltage | 30A Full Load Amps (FLA) | 150A Locked Rotor Amps (LRA) | 50/60 Hz | Factory part# HN51KC024
  • OEM vs Generic: This is a genuine Carrier Factory Authorized Part (FAP), engineered to exact factory tolerances. Generic contactors often use thinner contact material and lower-grade coil windings, leading to premature pitting, coil burnout, and repeat failures — especially on high-cycling residential systems.
  • Install Difficulty: 3/5 — Always disconnect and lock out all power before servicing. Discharge any capacitors in the control panel before touching wiring. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wiring connections before removal. Verify 24V coil pull-in after installation with a call from the thermostat.
  • Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Engineered as the direct OEM replacement for Carrier PY3GNAA24040NA. Also cross-references to Carrier/Bryant/Payne systems listing HN51KC024 in their official parts documentation. Always verify the part number on your unit's wiring diagram or data plate before ordering. Our team is available to confirm fitment — contact us before you buy if you have any questions.

Shipping Information

  • Orders placed before 3PM CST ship same business day
  • Standard delivery: 2-5 business days
  • Express shipping available at checkout
  • Free shipping on orders over $99
  • Tracking number emailed upon shipment

Return Policy

  • 30-day returns on unused parts in original packaging
  • Electrical parts (capacitors, contactors, control boards) are final sale once installed
  • Email info@nationalhvacparts.com to initiate a return
  • Refunds processed within 5-7 business days

Frequently Asked Questions

Does this Contactor fit my Carrier PY3GNAA24040NA?
Yes. This is the factory-specified OEM contactor for the Carrier PY3GNAA24040NA. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.
How do I replace the contactor on my Carrier PY3GNAA24040NA?
Difficulty: Medium (30–45 min)
Step 1: Turn off breaker. Step 2: Open condensing unit panel. Step 3: Photograph ALL wiring on the contactor. Step 4: Label each wire with tape. Step 5: Disconnect wires and remove old contactor. Step 6: Mount new contactor, reconnect wires matching your photo. Step 7: Restore power and test.
My AC clicks but the compressor won’t turn on. What’s wrong?
Clicking from the outdoor unit without the compressor starting = worn contactor. The contactor sends power to the compressor. When its contacts are pitted, it clicks but can’t make solid contact. Look for: visible pitting/burn marks on the contactor face, intermittent operation, or buzzing.
Is this contactor compatible with Bryant or Payne too?
Many Carrier parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.
Should I use OEM or aftermarket for my Carrier contactor?
OEM recommended for reliability and warranty compatibility. OEM parts match exact factory specifications for proper fit, performance, and safety. While aftermarket alternatives cost less upfront, the risk of improper fit and reduced lifespan usually makes OEM the better value long-term.
How fast does National HVAC Parts ship?
Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.
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Mike Rivera
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